http://archive.newsleader.com/VideoNetwork/2730464232001/Experts-in-Africa-Optimistic-on-Potential-Malaria-Vaccinehttp://cdn.newslook.com/40/403c83047ca34bfc62582aa270790a3b/mp4_low/403c83047ca34bfc62582aa270790a3b-mp4_low.mp4http://archive.newsleader.com/VideoNetwork/2730464232001/Experts-in-Africa-Optimistic-on-Potential-Malaria-Vaccinehttp://cdn.newslook.com/40/403c83047ca34bfc62582aa270790a3b/images/frame_0011.jpgExperts in Africa Optimistic on Potential Malaria VaccineExperts in Africa, the continent worst-hit by malaria, reacted with optimism but also caution on Tuesday at hopes that the first vaccine against the killer disease may soon reach the market.1angoladurbandemocratic republic of congonewslookAfricanigeriaHealthWorldSouth AfricaGSKGlaxosmithkline Plc00:50